The Intel 660p was a solid-state drive in the M.2 2280 form factor, launched on August 9th, 2018, that is no longer in production. It was available in capacities ranging from 512 GB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Intel 660p interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the SM2263EN from Silicon Motion, a DRAM cache chip is available. Intel has installed 64-layer QLC NAND flash on the 660p, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are processed more quickly. The cache is sized at 280 GB, once it is full, writes complete at 175 MB/s. The 660p is rated for sequential read speeds of up to 1,800 MB/s and 1,800 MB/s write; random IOPS reach up to 220K for reads and 220K for writes.
At its launch, the SSD was priced at 204 USD. The warranty length is set to five years, which is an excellent warranty period. Intel guarantees an endurance rating of 400 TBW, a relatively low value compared to other SSDs.